baber/WOPTO huggingface dataset:
Patent GB-1472103-A (GB)
Title: Continuous process for preparing a spinning solution of an acrylic polymer
IPC: C08L33/00
Filed: 1974-06-14
Abstract: 1472103 Production of acrylic spinning solutions MONTEFIBRE SpA 14 June 1974 [14 June 1973] 26551/74 Heading C3P A continuous process for preparing a spinning solution of an acrylic polymer directly from a bulk polymerization slurry which contains residual monomer comprises: (a) adding a solvent to the slurry to give a mixture having a viscosity less than 2 poises, but in an amount which will not dissolve the polymer; (b) heating the mixture from (a) to above room temperature and up to 170 C. but without dissolving the polymer; (c) evaporating at least 30 wt. per cent of the unreacted monomer or monomers in one or more adiabatic evaporation steps under vacuum; (d) optionally adding further solvent to give the desired concentration for the spinning solution; (e) heating the mixture to a temperature not exceeding 170 C. until the polymer is attacked and completely dissolved by the solvent and (f) if necessary removing any residual monomer or monomers by thin layer evaporation. The preferred solvent is dimethyl acetamide. In the example, the polymer is a copolymer of acrylonitrile and vinylacetate.
Patent GB-226172-A (GB)
Title: Improvements in air cooled internal combustion engines
IPC: F01P1/02
Filed: 1924-11-07
Abstract: 226,172. Potez, H. C. A. Dec. 10, 1923, [Convention date]. Four-stroke-cycle engines; cylinders, cooling; Crank chambers; driving-gear.-Cylinders, cooled by movement through the air or by the draught caused by the propeller of an aircraft, are arranged in stepped relationship behind one another. Fig. 2 shows the application to a radial cylinder, four-stroke cycle aircraft engine having a stepped crank-case 5 and two rows of cylinders 1, 2, arranged in staggered relationship to one another. The rear cylinders 1 may have a greater bore and stroke than the front cylinders, but in the case of an engine having two cylinders only they are of equal bere and stroke, the rear connecting- rod being larger than the front one.
Patent GB-1502840-A (GB)
Title: Forming size
IPC: C03C25/28
Filed: 1975-06-24
Abstract: 1502840 Sizing glass fibres P P G INDUSTRIES INC 24 June 1975 26669/75 Heading D1P [Also in Divisions B2 and C3] Glass fibres have a size coating produced by drying thereon, an aqueous mixture of polyvinyl acetate, a fatty acid amide lubricant, a methacrylato chromic halide and a gamma (ethylene diamine) propyl trialkoxy silane, said aqueous mixture having a pH between 6.1 and 6.5.
Patent GB-980257-A (GB)
Title: Improvements in and relating to electrical apparatus having an induction disc armature
Inventor: MOWL ARTHUR RICHARD
IPC: G01R11/40
Filed: 1960-08-02
Abstract: 980,257. Electric meters. ENGLISH ELECTRIC CO. Ltd. July 28, 1961 [Aug. 2, 1960], No. 26717/60. Heading G1Q. In a polyphase electrical apparatus e.g. an energy meter plural phase energized driving elements each comprising a series and a shunt electromagnet are disposed round an induction disc armature to produce torque therein, and the armature is a unitary structure of two circular conducting discs (Figs. 1, 2) having annular metal hubs 10, 11 separated by annular airgaps 14, 15 from annular metal outer portions 12, 13; the gaps being staggered and the discs being separated by a sheet of insulant 16 e.g. paper, cloth or glass fibre cloth saturated with thermosetting or thermoplastic cement or resin and bonded together in a jig. Three such discs may be similarly assembled into an armature (Fig. 3 not shown) with insulating separators; the airgap of the central disc staggered with respect to those of the outer discs. Staggered annular grooves may be cut partway through two conducting discs to define the hub and outer partners; the discs being thereafter bonded together (Fig. 4 not shown). The annular airgaps or grooves may be filled with insulating material e.g. thermosetting or thermoplastic resin or cement. The armature of Fig. 1 may have two diametrically opposed radial slots or grooves 30, 31 cut in the hub portion of each disc; the slots or grooves in the respective discs being disposed at 90 degrees (Fig. 5).
Patent GB-1402209-A (GB)
Title: Microcracked nickel plating bath
IPC: C25D3/12
Filed: 1973-06-05
Abstract: 1402209 Electro-depositing micro-cracked nickel OXY METAL FINISHING CORP 5 June 1973 [5 June 1972 1 March 1973] 26822/73 Heading C7B An aqueous, acidic plating bath for electrodeposition of micro-cracked nickel contains nickel ions and a bath soluble polyamine of the formula where R 1 , R2, R3 and R4 independantly represent hydrogen, alkyl (C=1-4), hydroxyalkyl (C=1-4), -R 5 -[0-R 6 ] x -SO 3 M or -R 5 -[OR 7 ] x -SO 3 M, SO 3 M R 5  and R6 are alkylene or hydroxyalkylene, R 7  is a trivalent aliphatic hydrocarbon or hydroxy substituted aliphatic hydrocarbon group, x is 0 or 1-3, a is 1-4 and M is a cation, subject to proviso that at least one hydroxy group is present. The bath may include as brighteners sulpho-oxygen compounds e.g. allyl or vinyl sulphonate, betastyrene sulphonate or cyano alkane sulphonic acid; acetylenic brighteners or heterocyclic quaternary amine brighteners. Finely divided powders e.g. barium SO 4 , Al oxide, or Si oxide may be present in the bath. The nickel plating bath may be a Watt's or high chloride bath. Substrates of phenolic resin, polypropylene or ABS resin are first electrolessly coated with nickel. Chromium may be electro-deposited on to the micro-cracked nickel deposited from the above baths.
Patent GB-710518-A (GB)
Title: Improvements in or relating to furnace boilers for solid fuels
IPC: F23K3/06
Filed: 1951-11-15
Abstract: 710,518. Boiler furnaces. BAILLON, M. L. C. E. Nov. 15, 1951 [Feb. 20, 1951], No. 26836/51. Class 51 (1) A boiler having an internal furnace is provided with a flat hearth 10, Fig. 1, above which is a casing 15 for the supply of fuel, the bottom of the casing forming a slot 27, on the side of the hearth remote from a combustion chamber 9, through which air for combustion is supplied, and a further slot 16, on the side of the hearth adjacent the combustion chamber, through which gases flow to the combustion chamber and through which slag may be removed from the hearth. As shown in Fig. 1 the furnace has a hopper 24 which supplies fuel through the casing 15 in which the fuel is coked, to the flat hearth 10 from which clinker may be pushed into an ashpit 13 by pushers 40. The hopper has apertures 24' for the inlet of primary air. Apparatus 33 is provided in the hopper for loosening the fuel in the casing 15 and breaking up any coke that forms in the lower portion of the casing. The combustion gases flow to flue tubes 6 arranged so that the gases traverse the boiler several times before passing to an exhaust conduit 21 and an exhaust fan 22 driven by an electric motor controlled by a thermostat situated in the path of the flue gases. A conduit 81, which bye-passes the flue tubes 6, leads to the exhaust conduit 21 and is fitted with a weighted damper valve arranged so that when the draught decreases the damper valve opens and allows combustion products to flow through the conduit 81 instead of through the boiler flues. In a modification, Fig. 18, the hearth 10 is provided with rows of apertures 202, 203, through which air may be supplied and a water-cooled baffle 301 is provided in the combustion chamber.
Patent GB-926230-A (GB)
Title: Improvements relating to radar mapping systems
Inventor: VOLES ROGER
IPC: G01S13/90
Filed: 1957-08-28
Abstract: 926,230. Radar. ELECTRIC & MUSICAL INDUSTRIES Ltd. Aug. 14, 1958 [Aug. 28, 1957], No. 27041/57. Drawings to Specification. Class 40 (7). In a radar mapping system carried in an aircraft, the gain of the receiver is adjusted automatically in accordance with the angles of roll and pitch of the aircraft. The aerial has a (cosec)<SP>2</SP> polar diagram, in the vertical plane, directed towards the ground. The radar system is a normal pulse type and controls a C.R.T., the screen of which is photographed by a film strip moving continuously across the screen. At each transmitted pulse the trace is swept across the screen and pulses reflected from the ground produce an increase in beam intensity, the position of which along the scan line on the C.R.T. screen corresponds with range. The rate of travel of the film strip is proportional to the aircraft speed and is controlled from a Doppler radar system and a map of the area viewed by the aerial is produced. The gain control of the receiver is adjusted from a computer, which receives voltages corresponding to the aircraft height, set in manually or automatically, and the angles of pitch or roll derived gyroscopically.
Patent GB-270693-A (GB)
Abstract: 270,693. Thiry, L. May 4, 1926, [Convention date]. Mechanical interrupters; contacts. - Contact breaker arms for magnetos have a pivot consisting wholly or partially of indiarubber the elastic stress in which returns the contact arm after cam - operation, the contact arm being insulated by the pivot from the interrupter plate on which it is mounted. As shown in Fig. 1, the arm a has a ring of rubber d surrounding the pivot c on the plate a the rubber ring being cemented to the pivot and to the hole in the contact arm. Alternatively the ring d, Fig. 3, may be compressed radially to the form shown in Fig. 2 in which its elongation under compression causes it to completely fill the space between the pivot c and the hole in the arm a the radial stress in the rubber making it unnecessary to cement it in position. The rubber ring d is arranged normally to be under torsional stress tending to press the contacts together, this stress being increased on operation of the contact arm, the return movement of which may also be assisted by springs. Various methods of compressing the ring and securing it in position are described. The Specification as open to inspection under Sect. 91 (3) (a) also describes a further modification, Fig. 10, (Cancelled) in which the pivot d itself consists wholly of rubber. This subject-matter does not appear in the Specification as accepted.
Patent GB-807570-A (GB)
Title: Improvements in or relating to scintillators
Inventor: EGELSTAFF PETER ALFRED
IPC: G01T1/202
Filed: 1956-09-05
Abstract: 807,570. Glass composition. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Aug. 28, 1957 [Sept 5, 1956], No. 27102/56. Class 56. [Also in Group XL(a)] Examples of low melting point glass containing organic phosphors in nuclear radiation detectors are firstly boracic acid, heated to form a melt at just below 200‹C. and secondly sodium dihydrogen-phosphate (6 gm.) mixed with phosphoric acid (10 c.c.) and didymium oxide (2 gms.) heated to just over 200‹C. In the latter example tungsten or samarium oxide may be used instead of the didymium oxide and caesium may replace the sodium in the phosphate.
Patent GB-363359-A (GB)
Title: Improvements relating to the printing or colouring or colour embossing of textile fabrics
IPC: B41F17/00
Filed: 1930-09-11
Abstract: A textile fabric is printed or coated with colour by pressing it together with a moistened lamina between a pair of platens, one of which is provided with blocks and the other heated to generate steam from the lamina to transfer or fix the colour.  The upper platen 1 carrying the inked block or dies 3 is hinged to facilitate the insertion and removal of the dies and may be pressed towards the lower stationary and heated platen 2 by means of a hand-or power-driven flywheel 5 which operates an eccentric rod 7 connected to a rod 8 engaging a socket 10 on the platen 1. The fabric 18 to be treated is preferably supported upon a screen of stretched linen and is placed between the platens above a web of moistened material passing from a <PICT:0363359/III/1> bath 12 and fed forward between each printing &c. operation by feed rollers 13, 14 operated by a hand-lever 15 and chain gearing 17.ALSO:A textile fabric is printed or coated with colour by pressing it together with a moistened lamina between a pair of platens, one of which is provided with blocks or dies and the other heated to generate steam from the lamina to fix the design.  The fabric 18 to be treated is preferably supported upon a screen of stretched linen, and is placed between the platens 1, 2 above a web of moistened material passing from a bath 12 and fed forward <PICT:0363359/IV/1> between each printing &c. operation by feed rollers 13, 14 operated by a hand-lever 15 and chain gearing 17. Discharge dyes may be employed.
Patent GB-907218-A (GB)
Title: Improvements in or relating to reaction motors
Inventor: RASSIER CECIL ARTHUR
IPC: F02K9/34
Filed: 1958-08-25
Abstract: 907,218. Rocket motors. SEBEL & CO. Ltd., D. Aug. 24, 1959 [Aug. 25, 1958], No. 27258/58. Class 9 (2). A rocket motor 1 having a nozzle-carrying end cap 4 secured by a stirrup 7 as in Specification 642,689 is provided with a flange 13 to deflect rearwardly any propellant gas, which may leak forward between the cap and the outer surface of the rocket casing. To facilitate positioning of the cap 4, the flange may be slidable on the casing.
Patent GB-535382-A (GB)
Title: Improvements in and relating to wind-shield wipers
IPC: B60S1/40
Filed: 1939-10-05
Abstract: 535,382. Windscreen wipers. TRICO PRODUCTS CORPORATION. Oct. 5, 1939, No. 27290. Convention date, March 13. [Class 138 (i)] The wiper blade is provided with a bearing- surface for the arm, resilient means being provided for holding them in contact with the blade normal to the windshield while permitting the wiper to rock. The blade 1 is provided with a metal backing 2 fitted with a clip 15 having a bearing surface 9 engaging the under surface of the arm 10. A spring 11 lies between the part 9 and a stirrup 12 embracing the arm which is provided with a projection 14 to prevent unintentional removal of the stirrup from the arm ; the under surface of the stirrup is bowed to facilitate the rocking movement of the blade.
Patent GB-718525-A (GB)
Title: Improvements in or relating to photographically presensitized metal plates
IPC: G03F7/021
Filed: 1951-11-22
Abstract: 718,525. Diazo sensitized metal plates. MINNESOTA MINING & MANUFACTURING CO. Nov. 22, 1951 [Dee. 6, 1950], No. 27413/51. Class 98(2) A plate as of aluminium, zinc or tinned iron has at least one smooth side rendered permanently hydrophilic by treatment with an aqueous solution of a hydrophilic inorganic material such as sodium stannate or alkali silicate and then provided with a thin coating of a water soluble diazo material, such as a diazo resin made by treating paradiazodiphenylamine sulphate with paraformaldehyde and anhydrous zinc chloride in sulphuric acid at 6C, pouring the product on ice, precipitating the resin by a saturated zinc chloride solution and purifying it by dissolving. in water and re-precipitating with alcohol, the diazo material being such that it will react to light to produce a hydrophobic lithographic printing image in exposed portions and be capable of being washed away clean in unexposed portions to leave the hydrophilic surface bare. An example describes cleaning an aluminium foil or sheet as with sodium triphosphate, immersion in sodium silicate solution as of 2 per cent concentration, washing, drying, coating with diazo solution, drying .again, cutting to standard sizes in subdued light and packing. In use the foil or sheet is exposed under a negative to a carbon arc, photoflood bulb or fluorescent tube, rubbed with gum arabic solution to remove unreacted diazo sensitizer, and while still wet treated with an epoxy resin or printers developing ink, when it is ready for the press, or it may be coated with gum arabic if it is to be stored before use.
Patent GB-741278-A (GB)
Title: Improvements in or relating to synchronizing arrangements for colour television
IPC: H04N9/26
Filed: 1951-02-15
Abstract: 741,278. Colour television. CHROMATIC TELEVISION LABORATORIES, Inc. Feb. 15, 1951 [March 20, 1950], No. 27488/54. Divided out of 741,221. Drawings to Specification. Class 40 (3). In a colour television system employing a dot - sequential type of transmission, synchronism between the production of the colour signal samples at the transmitters and their presentation in the correct colours at the receiver is maintained by controlling both processes in dependence upon the frequency difference between the sound and vision carriers utilized in the system. The invention is described as applied to a system employing at the receiver a cathode-ray tube of the type described in Specification 721,199 in which a green phosphor is carried on the tube face, and red and blue phosphors are carried by auxiliary electrodes located immediately behind the tube face to which the electron beam may be attracted by the application of appropriate potentials. At the transmitter a selective filter following the vision modulator derives a signal at the frequency of the vision carrier and this signal is then combined with the frequency-modulated sound carrier to derive a difference frequency signal. This signal may vary by as much as 25 kc/s. due to the sound modulation, but this variation is small compared with the difference frequency which is of the order of 5 Mc/s. A similar method is employed at the receiver for deriving the signal to control the colour change and since this signal varies in like manner precise synchronism is maintained. Alternatively a filter may be employed to separate out the sound carrier from its modulation products before deriving the difference frequency signals in which case the signals remain fixed in frequency. Phase shifting means are provided at the receiver to vary the phase of one or the other of the selected carrier frequency signals to permit minor adjustment of the phase of the synchronism. At the receiver the difference frequency signal is applied to the auxiliary electrodes in the cathode-ray tube to control the colour presented as described in the parent Specification whilst at the transmitter the difference frequency signal is applied to open gate stages passing the individual colour signals to the vision modulator. In the particular embodiment disclosed, which produces signals in the sequences red, green, blue, green, &c., the signal is applied in opposite phase to the red and blue gates and through a frequency doubler introducing a phase shift of 90 degrees to the green tube. Reference is also made to the use of three-phase sampling. Multiples or submultiples of the difference frequency may be used for the sampling and colour switching.
Patent GB-1434811-A (GB)
Title: Piston typre machines
IPC: F02B57/08
Filed: 1973-06-08
Abstract: 1434811 Driving gear; rotary engines; reciprocating compressors MOTOREN-FORSCHUNGS GmbH & CO KG FRANKE-MOTOREN 8 June 1973 [8 June 1972] 27489/73 Headings F1B, F1M and FIN A machine e.g. an I.C. engine, compressor or steam engine, comprises a cylinder with a piston movable therein connected through a block and slot guide to a drive-shaft, the slot guide being variable in inclination relative to the direction of piston movement to alter the piston stroke and displace the dead centre of its stroke. In an opposed piston engine an element 18, Fig. 1, can be angularly adjusted in a connecting device 16 by setting means 20 which may be a gearing arrangement, a worm drive, a cone-pulley arrangement, a hydraulic positioner or an electromagnetic actuator. In another embodiment a cylinder is rotatable in a sleeve 31, Fig. 5 mounted on a hollow shaft 28, 29 in members (41, 42), Fig. 3 (not shown), which support, on bearings (44, 45), discs (46, 47) which have slot guides 96, Fig. 6. Blocks 117 slide in the slot guides and control guide discs 125 which have guide rods 49 fixed thereto which penetrate the cylinder and carry a piston 107 for rotational movement with the guide disc 125. The latter have slots 54 which receive the shaft 28, 29. The angular relationship between the guide discs 125 and the blocks 117 is variable by axial movement of a setting ring 129 which engages slots in both members by means of inwardly-directed keys, the inner keys which engage the guide disc being angularly arranged with respect to the outer key which engages the block 117. In another embodiment a slot guide 82, Fig. 8, is supported by springs 85, 86 in the inclined position so that its inclination is automatically varied by the pressure acting on the piston, e.g. arising on starting, to alter the piston stroke and displace its dead centre position. In another embodiment a slot guide arranged in a piston and guided in a disc arranged in a recess has setting means in the piston which maintain the slot guide in an inclined position for limited adjustment.
Patent GB-638891-A (GB)
Title: Improvements in or relating to filters
IPC: B01D25/24
Filed: 1947-10-14
Abstract: 638,891. Filters. NORTH BRITISH RAYON, Ltd., and MARSDEN, R. J. B. Oct. 14, 1947. No. 27510. [Class 46] [Also in Group XXVIII] In an edge filter comprising stacks of sheets having marginal slots, the slots in alternate sheets are inclined relatively to those in the remaining sheets sufficiently to cause the inner portions of the former slots to overlap the inner portions of the latter slots whereby the required transverse passage through all the sheets of the filter is formed and the mouths of the slots in alternate sheets are displaced in the plane of the sheets relatively to those in the remaining sheets by an amount sufficient to avoid overlapping of the mouths in adjacent sheets. In one embodiment the filter comprises a stack of similar circular sheets 1, Fig. 2, each sheet having cut in its periphery six equi-spaced slots 2 inclined to the normals to the periphery at the mouths of the slots and the sheets are superposed so that each sheet is reversed in relation to the adjoining sheets whereby series of non- overlapping slots 2, 2a are formed whose inner ends all overlap to form a transverse passage 3. The registration of the sheets in their correct relative position is achieved by the non-circular central spindle 4 to which end plates 5, 6, Fig. 1, each having a machined rim bearing only on the marginal portion of the stacks is secured. Fig. 3 shows a rectangular form of sheet, the sheets being-interleaved in reverse order so that alternate slots are inclined in opposite directions, correct registering being ensured by rods passing through holes 13 provided in each sheet 1. In another embodiment the sheets are shaped as hollow rectangles and are slotted similarly to that shown in Fig. 3, but along each of the four sides of the inner periphery. In this embodiment the endplates clamp the filter sheets on both inner and outer rectangular margins. The sheets may be of porous material or of metal or if used to filter corrosives, they may be made of a plastic material such as polystyrene. The filtering surface may be used to support a layer of cloth or of kieselguhr.